Dans ce chapitre, Feynman après l'exposé classique du champ magnétique produit par un courant électrique, aborde les mêmes questions sous l'angle de la Relativité Restreinte. Passionnant et très riche ! Topics: Physics, Feynman, magnetostatics
byScherer, L. B.; Martin, C. A.; West, M.; Florance, J. P.; Wieseman, C. D.; Burner, A. W.; Fleming, G. A
To quantify the benefits of smart materials and structures adaptive wing technology, Northrop Grumman Corp. (NGC) built and tested two 16% scale wind tunnel models (a conventional and a ''smart'' model) of a fighter/attack aircraft under the DARPA/AFRL/NASA Smart Materials and Structures Development - Smart Wing Phase 1. Performance gains quantified included increased pitching moment (C(sub M)), increased rolling moment (C(subl)) and improved pressure distribution. The benefits were obtained... Topics: MAGNETIC BEARINGS, MAGNETIC SUSPENSION, DESIGN ANALYSIS, MAGNETOSTATICS, THRUST BEARINGS
AC Sources - In Chapter 10 we learned that changing magnetic flux can induce an emf according to Faraday�s law of induction. In particular, if a coil rotates in the presence of a magnetic field, the induced emf varies sinusoidally with time and leads to an alternating current (AC), and provides a source of AC power. The symbol for an AC voltage source is... Topics: Physics, Electromagnetism and Electromagnetic Radiation, Classical Electromagnetism�,... Source: http://www.flooved.com/reader/2824
P. Sylvester Modern Electromagnetic Fields (Prentice-Hall Electrical Engineering Series) Prentice-Hall Inc. 1968 Acrobat 7 Pdf 15.1 Mb. Scanned by artmisa using Canon DR2580C + flatbed option Topics: Electronics, Special Relativity, Electrostatics, Mapping Fields, Electrodynamics, Maxwell's...
The NASA Langley Research Center has been performing studies to address the feasibility of various single-stage to orbit concepts for use by NASA and the commercial launch industry to provide a lower cost access to space. Some work on the conceptual design of a typical lifting body concept vehicle, designated VentureStar(sup TM) has been conducted in cooperation with the Lockheed Martin Skunk Works. This paper will address the results of a preliminary flight controls assessment of this vehicle... Topics: COMPUTERIZED SIMULATION, MAGNETIC LENSES, ELECTRON BEAMS, FOCUSING, MAGNETOSTATICS, PERMANENT...
This paper describes the current activities at the National Transonic Facility to document the test-section flow and to support tunnel improvements. The paper is divided into sections on the tunnel calibration, flow quality measurements, data quality assurance, and implementation of wall interference corrections. Topics: ELECTROMAGNETS, NUMERICAL ANALYSIS, MAGNETIC FIELDS, MAGNETOSTATICS, COMPUTATION, MODELS, VASIMR...
byMr. Travis Byington;Lawrence Evans;Mr. Ryan Magee;Hao Zhang
The Biot-Savart law- Soon after they learned of Oersted's discovery that a current produces magnetic effects, Biot and Savart undertook careful experiments to determine the details. In modern terminology, their research investigated the B-�eld set up by an in�nitesimal segment of a current-carrying wire. ... Topics: Physics, Electromagnetism and Electromagnetic Radiation, Classical Electromagnetism�,... Source: http://www.flooved.com/reader/2915
Since ancient times, the notion of ray or beam propagation has been one of the mosten during and fundamental concepts in optical physics. As a zeroth order approximation we might consider a plane wave to be a model of a beam and its propagation vector to be a model of a ray. This is a reasonable start, but it is a much too restricted view and we can do much better. What we need is a solution to Maxwell's equations which is like a plane wave, but limited in spatial extent. One approach, the... Topics: Physics, Acoustics, Optics and Waves, Electromagnetism and Electromagnetic Radiation, Optics�,... Source: http://www.flooved.com/reader/3004